package com.shuige.weblog.common.exception;

import com.shuige.weblog.common.enums.ResponseCodeEnum;
import com.shuige.weblog.common.utils.Response;
import lombok.extern.slf4j.Slf4j;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.MethodArgumentNotValidException;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.security.access.AccessDeniedException;

import javax.servlet.http.HttpServletRequest;
import java.util.Optional;

/**
 * @author felix
 * @date 2024/5/27 23:06
 *
 * 全局异常处理
 */
@ControllerAdvice
@Slf4j
public class GlobalExceptionHandler {

    /**
     *
     * @param request
     * @param e
     * @return
     * 捕获自定义业务异常
     */
    @ExceptionHandler({BizException.class})
    @ResponseBody
    public Response<Object> handleBizException(HttpServletRequest request, BizException e){
        log.warn("{} request fail,errorCode:{},errorMessage:{}",request.getRequestURI(),e.getErrorCode(),e.getErrorMessage());
        return Response.fail(e);
    }

    @ExceptionHandler({Exception.class})
    @ResponseBody
    public Response<Object> handleOtherException(HttpServletRequest request,Exception e){
        log.error("{} request error,{}",request.getRequestURI(),e);
        return Response.fail(ResponseCodeEnum.SYSTEM_ERROR);
    }

    @ExceptionHandler({MethodArgumentNotValidException.class})
    @ResponseBody
    public Response<Object> handleMethodArgumentNotValidException(HttpServletRequest request, MethodArgumentNotValidException e){
        //参数错误异常码
        String errorCode = ResponseCodeEnum.PARAM_NOT_VALID.getErrorCode();

        //获取BindingResult
        BindingResult bindingResult = e.getBindingResult();

        StringBuilder sb = new StringBuilder();

        // 获取校验不通过的字段，并组合错误信息，格式为： email 邮箱格式不正确, 当前值: '123124qq.com';
        Optional.ofNullable(bindingResult.getFieldErrors()).ifPresent(errors->{
            errors.forEach(error->{
                sb.append(error.getField())
                        .append(" ")
                        .append(error.getDefaultMessage())
                        .append(",当前值： '")
                        .append(error.getRejectedValue())
                        .append("';");
            });
        });

        //错误信息
        String errorMessage = sb.toString();

        log.warn("{} request error,errorCode:{},errorMessage:{}",request.getRequestURI(),errorCode,errorMessage);

        return Response.fail(errorCode,errorMessage);

    }

    @ExceptionHandler({ AccessDeniedException.class })
    public void throwAccessDeniedException(AccessDeniedException e) throws AccessDeniedException {
        // 捕获到鉴权失败异常，主动抛出，交给 RestAccessDeniedHandler 去处理
        log.info("============= 捕获到 AccessDeniedException");
        throw e;
    }
}
